The spectra of the RCB stars were collected over the last 15 years at three telescopes with four different instruments. We include spectra of 6 RCB stars obtained with Gemini South/GNIRS in September 2005 [1]}. We include spectra of 2 more RCB stars observed with the Flamingos 2 spectrograph [2]} on the Gemini-South telescope in 2015. We observed the RCB star Z Umi with GNIRS on the Gemini-North telescope in 2011.
In 2013, we observed 9 RCB stars with IRTF/SpeX at R \(\approx \)  2500. We observed 12 more RCB stars in 2014 and 26 RCB stars in 2015 with IRTF/Spex at R \(\approx \)  5000.
